The ex-wife of former Subway spokesman Jared Fogle is speaking out about what it was like to discover her husband was a pedophile.
Katie McLaughlin told CBS This Morning in a new interview that she "knew nothing about [Fogle's] involvement" in sex crimes against minors until the FBI came knocking at the door of their home in Zionsville, Indiana — which they shared with their two young children — last year.
Related: Jared Fogle through the years
Jared Fogle the Subway guy through the years
Jared Fogle the Subway guy through the years
Subway pitchman Jared Fogle shows off his old pants to students at Mary E. Bryant Elementary School in Tampa, Fla., Friday, Oct. 31, 2003. Fogle is better known as "Jared the Subway Guy," famous because he lost 245 pounds a few years ago by eating Subway subs and not much else. Fogle spoke to the students nutrition. (AP Photo/David Kadlubowski)
In this photograph taken by AP Images for SUBWAY - Celebrity chef Robert Irvine, left, challenges "The Subway Guy" Jared Fogle to build the most flavorful breakfast sandwich during the SUBWAY "Better Breakfast Battle," Thursday, May 26, 2011, in New York. (Diane Bondareff/AP Images for SUBWAY)
In this photo taken by AP Images for SUBWAY, Houston football star Arian Foster, right, and Jared Fogle, "the SUBWAY guy," are seen eating SUBWAY sandwiches at the SUBWAY All-Star BBQ on Wednesday, July 13, 2011, in Los Angeles. The event marked the launch of the sandwich chain's BBQ Pulled Pork sub and helped raise funds for victims of recent disasters in western Alabama, one of the original homes of BBQ. (Casey Rodgers/AP Images for SUBWAY)
In this photo taken by AP Images for SUBWAY Restaurants, former Alabama football star Tyrone Protho, right, and Jared Fogle, left, "the SUBWAY guy" present a $10,000 donation to Henry Lipsey of the West Alabama Food Bank at the SUBWAY restaurant in Tuscaloosa, AL, on Wednesday, Aug. 10, 2011. The chain recently introduced a new BBQ Pulled Pork sub, and the funds will help feed victims of tornadoes in the region, one of the original homes of BBQ. (Gary Tramontina/ AP Images for SUBWAY Restaurants)
Jared "the SUBWAY guy" coach the National Little League Appreciation Game for the Challenger Division as they launch the national "Buddy Badge" program on Wednesday, June 27, 2012 in Los Angeles, Calif. (Photo by Joe Kohen/Invision for Subway/AP Images)
Jared "The SUBWAY Guy" Fogle makes sandwiches at a SUBWAY cafe at the Navy Exchange, Saturday, Nov. 10, 2012 in Bethesda, Md. (Photo by Nick Wass/Invision for SUBWAY/AP Images)
Denise Austin, left, and Jared "The SUBWAY Guy" Fogle, right, flex for the camera at the Navy Exchange, Saturday, Nov. 10, 2012 in Bethesda, Md. (Photo by Nick Wass/Invision for SUBWAY/AP Images)
Puerto Rico and Chicago White Sox outfielder Alex Rios teams up with Jared the SUBWAY Guy to surprise customers with free SUBWAY sandwiches prior to the World Baseball Classic final, on Tuesday, March 19, 2013 in San Francisco. (Photo by George Nikitin/Invision for Subway/AP Images)
In this May 28, 2014 photo, Subway restaurant spokesman Jared Fogle arrives at the world premiere of "Maleficent" at the El Capitan Theatre in Los Angeles. FBI agents and Indiana State Police raided Fogle's Zionsville, Ind. home on Tuesday, July 7, 2015, removing electronics from the property and searching the house with a police dog. (Photo by Matt Sayles/Invision/AP)
Mel B, right, "America's Got Talent" judge and former Spice Girl, poses with Jared Fogle "The SUBWAY Guy"backstage at the "Project SUBWAY" fashion show during New York Fashion Week, Wednesday, Sept. 11, 2013, as part of SUBWAY Restaurants' SUBtember celebration. (Photo by Diane Bondareff/Invision for Subway Restaurants/AP Images)
A sandwich artist poses for a photo with Jared 'The Subway Guy' Fogle during SUBWAY March Madness, on Saturday, April 4, 2014 in Dallas. (Photo by Matt Strasen/Invision for SUBWAY/AP Images)
Former New England Patriots Running Back Kevin Faulk and Jared "The SUBWAY Guy" take a selfie with a football fan at a SUBWAY pre-game tailgate featuring sandwiches the new premium cut, all white meat Grilled Chicken Strips, outside Gillette Stadium prior to the Conference Championship in Foxborough, MA on Sunday, January 18, 2015, prior to the Conference Championship game. (Photo by Marc Andrew Deley/Invision for SUBWAY Restaurants/AP Images)
Jared "The SUBWAY Guy" Fogle, right, and a fan pose with #WhereSuperHeroesEat 3D street art in celebration of SUBWAY Restaurants partnership with the upcoming Marvel movie "Avengers: Age of Ultron" on Monday, April 13, 2015 in Los Angeles. (Photo by Matt Sayles/Invision for SUBWAY Restaurants/AP Images)
Olympic gold medalist swimmer Michael Phelps NFL player Michael Crabtree, spokesman for Subway Jared Fogle and NBA player Blake Griffin arrive at the 2009 ESPY Awards held at Nokia Theatre LA Live on July 15, 2009 in Los Angeles, California. The 17th annual ESPYs will air on Sunday, July 19 at 9PM ET on ESPN. (Photo by Kevork Djansezian/Getty Images for ESPY)
Jared 'The SUBWAY Guy' Fogle attends Go Red For Women The Heart Truth Red Dress Collection fashion show during Mercedes-Benz Fashion Week at The Theatre at Lincoln Center on February 6, 2014 in New York City. (Photo by Astrid Stawiarz/Getty Images)
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"That's how I found out," McLaughlin said. "They walked in and you're just in shock."
When asked whether she understood what was going on at the time, she said, "No. No, I didn't understand any of it to be honest. I mean you just — you float out of yourself because the FBI shouldn't be in your house."
McLaughlin is now suing Subway, alleging that the company has known about Fogle's sexual interest in children since 2004 but never did anything to address it.
CBS This Morning
The lawsuit says Subway was notified at least three times about Fogle's "sexual interest in and activity with children" but kept featuring him in ads and did not notify authorities.
McLaughlin and Fogle married in 2010 and had two children together, now aged three and five years old. She filed for divorce last year after Fogle pleaded guilty to the charges against him and she now has sole custody of their children.
CBS This Morning
McLaughlin told CBS that her husband had "two lives."
"He had two lives going on. You know, he was home with the kids and I in one life and he was out on the road in a different life, and he was able to keep those two very separate in a way that I couldn't't even fathom," she said.
Subway has declined to comment on McLaughlin's lawsuit.
Watch the video of McLaughlin's interview with CBS.